Katy Perry is willing to endure serious pain in the name of fashion. The singer squeezed her feet into sample-size, $2,495 Jimmy Choo “Zap” shoes with heels that light up and gingerly walked into Hollywood’s Tea Room for the Super Street Fighter IV launch after-party. The shoes are in such demand that there’s a waiting list.

Perry told such guests as Kid Rock, Adrian Grenier and David Guetta — who were celebrating record producer Lukasz “Dr. Luke” Gottwald‘s songwriter of the year award — “These shoes are two sizes too small, but God, it’s worth it.”